import time
def bubble_sort (nums):
    swapped = True
    while swapped:
        swapped = False
        for i in range (len (nums) - 1):
            if nums [i] > nums[i + 1]:
                nums[i], nums[i + 1] = nums[i + 1], nums[i]
                swapped = True
def read2list (filename)
    file = open (filename, "r")
    data = file.readlines ()
    return data
